A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

This doorless 20th-century elevator doesn't stop or slow down.

A Jenga-style cylindrical tower of books that appears to go on forever.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

A series of playful yellow penguins share a serious message about the environment.

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

A fascinating and enormous collection of natural history exhibits stained by a dark colonial legacy.

Drink among marionettes at this pub inside a historic puppet theater.

This charming, hidden guild museum holds some 700 years of crossbow history.

When you're a great Russian Tsar, even your vomit gets a statue.

One of Hollywood's most iconic actresses was born in an upscale Brussels neighborhood in 1929.

This modern arts center is built around a gem of late-Baroque architecture.

Intricate metal sculpture that's half gothic cathedral, half construction equipment.

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

Nature is slowly overtaking this disused cemetery on the outskirts of Brussels.

The place where houses are born.